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338 行
16 KiB
338 行
16 KiB
using System;
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using System.Text;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditor.Graphing;
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using UnityEditor.Graphing.Util;
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using UnityEngine;
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namespace UnityEditor.ShaderGraph
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{
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public static class GraphUtil
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{
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internal static string ConvertCamelCase(string text, bool preserveAcronyms)
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{
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if (string.IsNullOrEmpty(text))
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return string.Empty;
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StringBuilder newText = new StringBuilder(text.Length * 2);
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newText.Append(text[0]);
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for (int i = 1; i < text.Length; i++)
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{
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if (char.IsUpper(text[i]))
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if ((text[i - 1] != ' ' && !char.IsUpper(text[i - 1])) ||
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(preserveAcronyms && char.IsUpper(text[i - 1]) &&
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i < text.Length - 1 && !char.IsUpper(text[i + 1])))
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newText.Append(' ');
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newText.Append(text[i]);
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}
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return newText.ToString();
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}
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public static void GenerateApplicationVertexInputs(ShaderGraphRequirements graphRequiements, ShaderGenerator vertexInputs)
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{
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vertexInputs.AddShaderChunk("struct GraphVertexInput", false);
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vertexInputs.AddShaderChunk("{", false);
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vertexInputs.Indent();
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vertexInputs.AddShaderChunk("float4 vertex : POSITION;", false);
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vertexInputs.AddShaderChunk("float3 normal : NORMAL;", false);
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vertexInputs.AddShaderChunk("float4 tangent : TANGENT;", false);
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if (graphRequiements.requiresVertexColor)
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{
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vertexInputs.AddShaderChunk("float4 color : COLOR;", false);
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}
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foreach (var channel in graphRequiements.requiresMeshUVs.Distinct())
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vertexInputs.AddShaderChunk(string.Format("float4 texcoord{0} : TEXCOORD{0};", (int)channel), false);
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vertexInputs.AddShaderChunk("UNITY_VERTEX_INPUT_INSTANCE_ID", true);
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vertexInputs.Deindent();
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vertexInputs.AddShaderChunk("};", false);
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}
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static void Visit(List<INode> outputList, Dictionary<Guid, INode> unmarkedNodes, INode node)
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{
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if (!unmarkedNodes.ContainsKey(node.guid))
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return;
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foreach (var slot in node.GetInputSlots<ISlot>())
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{
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foreach (var edge in node.owner.GetEdges(slot.slotReference))
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{
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var inputNode = node.owner.GetNodeFromGuid(edge.outputSlot.nodeGuid);
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Visit(outputList, unmarkedNodes, inputNode);
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}
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}
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unmarkedNodes.Remove(node.guid);
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outputList.Add(node);
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}
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public static GenerationResults GetShader(this AbstractMaterialGraph graph, AbstractMaterialNode node, GenerationMode mode, string name)
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{
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var results = new GenerationResults();
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bool isUber = node == null;
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var vertexInputs = new ShaderGenerator();
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var vertexShader = new ShaderGenerator();
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var surfaceDescriptionFunction = new ShaderGenerator();
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var surfaceDescriptionStruct = new ShaderGenerator();
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var functionBuilder = new ShaderStringBuilder();
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var functionRegistry = new FunctionRegistry(functionBuilder);
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var surfaceInputs = new ShaderGenerator();
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surfaceInputs.AddShaderChunk("struct SurfaceInputs{", false);
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surfaceInputs.Indent();
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var activeNodeList = ListPool<INode>.Get();
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if (isUber)
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{
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var unmarkedNodes = graph.GetNodes<INode>().Where(x => !(x is IMasterNode)).ToDictionary(x => x.guid);
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while (unmarkedNodes.Any())
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{
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var unmarkedNode = unmarkedNodes.FirstOrDefault();
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Visit(activeNodeList, unmarkedNodes, unmarkedNode.Value);
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}
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}
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else
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{
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NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, node);
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}
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var requirements = ShaderGraphRequirements.FromNodes(activeNodeList);
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GenerateApplicationVertexInputs(requirements, vertexInputs);
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ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
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ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);
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ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs);
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ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceInputs);
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ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresPosition, InterpolatorType.Position, surfaceInputs);
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if (requirements.requiresVertexColor)
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surfaceInputs.AddShaderChunk(String.Format("float4 {0};", ShaderGeneratorNames.VertexColor), false);
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if (requirements.requiresScreenPosition)
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surfaceInputs.AddShaderChunk(String.Format("float4 {0};", ShaderGeneratorNames.ScreenPosition), false);
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results.previewMode = PreviewMode.Preview3D;
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if (!isUber)
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{
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foreach (var pNode in activeNodeList.OfType<AbstractMaterialNode>())
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{
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if (pNode.previewMode == PreviewMode.Preview3D)
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{
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results.previewMode = PreviewMode.Preview3D;
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break;
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}
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}
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}
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foreach (var channel in requirements.requiresMeshUVs.Distinct())
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surfaceInputs.AddShaderChunk(String.Format("half4 {0};", channel.GetUVName()), false);
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surfaceInputs.Deindent();
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surfaceInputs.AddShaderChunk("};", false);
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vertexShader.AddShaderChunk("GraphVertexInput PopulateVertexData(GraphVertexInput v){", false);
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vertexShader.Indent();
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vertexShader.AddShaderChunk("return v;", false);
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vertexShader.Deindent();
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vertexShader.AddShaderChunk("}", false);
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var slots = new List<MaterialSlot>();
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foreach (var activeNode in isUber ? activeNodeList.Where(n => ((AbstractMaterialNode)n).hasPreview) : ((INode)node).ToEnumerable())
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{
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if (activeNode is IMasterNode)
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slots.AddRange(activeNode.GetInputSlots<MaterialSlot>());
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else
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slots.AddRange(activeNode.GetOutputSlots<MaterialSlot>());
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}
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GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, slots, !isUber);
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var shaderProperties = new PropertyCollector();
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results.outputIdProperty = new Vector1ShaderProperty
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{
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displayName = "OutputId",
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generatePropertyBlock = false,
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value = -1
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};
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if (isUber)
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shaderProperties.AddShaderProperty(results.outputIdProperty);
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GenerateSurfaceDescription(
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activeNodeList,
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node,
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graph,
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surfaceDescriptionFunction,
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functionRegistry,
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shaderProperties,
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requirements,
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mode,
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outputIdProperty: results.outputIdProperty);
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var finalBuilder = new ShaderStringBuilder();
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finalBuilder.AppendLine(@"Shader ""{0}""", name);
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using (finalBuilder.BlockScope())
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{
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finalBuilder.AppendLine("Properties");
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using (finalBuilder.BlockScope())
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{
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finalBuilder.AppendLines(shaderProperties.GetPropertiesBlock(0));
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}
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finalBuilder.AppendLine(@"HLSLINCLUDE");
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finalBuilder.AppendLine("#define USE_LEGACY_UNITY_MATRIX_VARIABLES");
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finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Common.hlsl""");
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finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Packing.hlsl""");
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finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Color.hlsl""");
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finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/UnityInstancing.hlsl""");
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finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/EntityLighting.hlsl""");
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finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/ShaderVariables.hlsl""");
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finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/ShaderVariablesFunctions.hlsl""");
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finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/Functions.hlsl""");
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finalBuilder.AppendLines(shaderProperties.GetPropertiesDeclaration(0));
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finalBuilder.AppendLines(surfaceInputs.GetShaderString(0));
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finalBuilder.Concat(functionBuilder);
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finalBuilder.AppendLines(vertexInputs.GetShaderString(0));
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finalBuilder.AppendLines(surfaceDescriptionStruct.GetShaderString(0));
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finalBuilder.AppendLines(vertexShader.GetShaderString(0));
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finalBuilder.AppendLines(surfaceDescriptionFunction.GetShaderString(0));
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finalBuilder.AppendLine(@"ENDHLSL");
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finalBuilder.AppendLines(ShaderGenerator.GetPreviewSubShader(node, requirements));
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ListPool<INode>.Release(activeNodeList);
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}
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results.configuredTextures = shaderProperties.GetConfiguredTexutres();
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ShaderSourceMap sourceMap;
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results.shader = finalBuilder.ToString(out sourceMap);
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results.sourceMap = sourceMap;
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return results;
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}
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public static void GenerateSurfaceDescriptionStruct(ShaderGenerator surfaceDescriptionStruct, List<MaterialSlot> slots, bool isMaster)
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{
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surfaceDescriptionStruct.AddShaderChunk("struct SurfaceDescription{", false);
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surfaceDescriptionStruct.Indent();
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if (isMaster)
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{
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foreach (var slot in slots)
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surfaceDescriptionStruct.AddShaderChunk(String.Format("{0} {1};", NodeUtils.ConvertConcreteSlotValueTypeToString(AbstractMaterialNode.OutputPrecision.@float, slot.concreteValueType), NodeUtils.GetHLSLSafeName(slot.shaderOutputName)), false);
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surfaceDescriptionStruct.Deindent();
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}
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else
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{
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surfaceDescriptionStruct.AddShaderChunk("float4 PreviewOutput;", false);
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}
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surfaceDescriptionStruct.Deindent();
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surfaceDescriptionStruct.AddShaderChunk("};", false);
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}
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public static void GenerateSurfaceDescription(
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List<INode> activeNodeList,
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AbstractMaterialNode masterNode,
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AbstractMaterialGraph graph,
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ShaderGenerator surfaceDescriptionFunction,
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FunctionRegistry functionRegistry,
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PropertyCollector shaderProperties,
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ShaderGraphRequirements requirements,
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GenerationMode mode,
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string functionName = "PopulateSurfaceData",
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string surfaceDescriptionName = "SurfaceDescription",
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Vector1ShaderProperty outputIdProperty = null,
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IEnumerable<MaterialSlot> slots = null)
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{
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if (graph == null)
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return;
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surfaceDescriptionFunction.AddShaderChunk(String.Format("{0} {1}(SurfaceInputs IN) {{", surfaceDescriptionName, functionName), false);
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surfaceDescriptionFunction.Indent();
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surfaceDescriptionFunction.AddShaderChunk(String.Format("{0} surface = ({0})0;", surfaceDescriptionName), false);
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graph.CollectShaderProperties(shaderProperties, mode);
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foreach (var activeNode in activeNodeList.OfType<AbstractMaterialNode>())
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{
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if (activeNode is IGeneratesFunction)
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{
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functionRegistry.builder.currentNode = activeNode;
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(activeNode as IGeneratesFunction).GenerateNodeFunction(functionRegistry, mode);
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}
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if (activeNode is IGeneratesBodyCode)
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(activeNode as IGeneratesBodyCode).GenerateNodeCode(surfaceDescriptionFunction, mode);
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if (masterNode == null && activeNode.hasPreview)
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{
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var outputSlot = activeNode.GetOutputSlots<MaterialSlot>().FirstOrDefault();
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if (outputSlot != null)
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surfaceDescriptionFunction.AddShaderChunk(String.Format("if ({0} == {1}) {{ surface.PreviewOutput = {2}; return surface; }}", outputIdProperty.referenceName, activeNode.tempId.index, ShaderGenerator.AdaptNodeOutputForPreview(activeNode, outputSlot.id, activeNode.GetVariableNameForSlot(outputSlot.id))), false);
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}
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activeNode.CollectShaderProperties(shaderProperties, mode);
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}
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functionRegistry.builder.currentNode = null;
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if (masterNode != null)
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{
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if (masterNode is IMasterNode)
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{
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var usedSlots = slots ?? masterNode.GetInputSlots<MaterialSlot>();
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foreach (var input in usedSlots)
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{
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var foundEdges = graph.GetEdges(input.slotReference).ToArray();
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if (foundEdges.Any())
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{
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surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(input.shaderOutputName), masterNode.GetSlotValue(input.id, mode)), true);
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}
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else
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{
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surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(input.shaderOutputName), input.GetDefaultValue(mode)), true);
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}
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}
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}
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else if (masterNode.hasPreview)
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{
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foreach (var slot in masterNode.GetOutputSlots<MaterialSlot>())
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surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(slot.shaderOutputName), masterNode.GetSlotValue(slot.id, mode)), true);
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}
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}
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surfaceDescriptionFunction.AddShaderChunk("return surface;", false);
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surfaceDescriptionFunction.Deindent();
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surfaceDescriptionFunction.AddShaderChunk("}", false);
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}
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public static GenerationResults GetPreviewShader(this AbstractMaterialGraph graph, AbstractMaterialNode node)
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{
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return graph.GetShader(node, GenerationMode.Preview, String.Format("hidden/preview/{0}", node.GetVariableNameForNode()));
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}
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public static GenerationResults GetUberPreviewShader(this AbstractMaterialGraph graph)
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{
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return graph.GetShader(null, GenerationMode.Preview, "hidden/preview");
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}
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static Dictionary<SerializationHelper.TypeSerializationInfo, SerializationHelper.TypeSerializationInfo> s_LegacyTypeRemapping;
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public static Dictionary<SerializationHelper.TypeSerializationInfo, SerializationHelper.TypeSerializationInfo> GetLegacyTypeRemapping()
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{
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if (s_LegacyTypeRemapping == null)
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{
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s_LegacyTypeRemapping = new Dictionary<SerializationHelper.TypeSerializationInfo, SerializationHelper.TypeSerializationInfo>();
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foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
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{
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foreach (var type in assembly.GetTypesOrNothing())
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{
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if (type.IsAbstract)
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continue;
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foreach (var attribute in type.GetCustomAttributes(typeof(FormerNameAttribute), false))
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{
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var legacyAttribute = (FormerNameAttribute)attribute;
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var serializationInfo = new SerializationHelper.TypeSerializationInfo { fullName = legacyAttribute.fullName };
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s_LegacyTypeRemapping[serializationInfo] = SerializationHelper.GetTypeSerializableAsString(type);
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}
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}
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}
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}
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return s_LegacyTypeRemapping;
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}
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}
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}
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